If 75.0 g of CO reacts to produce 68.4 g CH3OH, what is the percent yield of CH3OH?CO + 2H2 --> CH3OH

Answer:

at room temperature: -water is in liquid state bcecause of which molecules are freely moving

at 0°C:- it is freezing pointof water in this state water molecule can't move due to which there is no collision and chemical reaction will not take place

Explanation:

if i m right than tag me brilliant

The difference is in the speed of the molecules. At 0°C, the molecules move more slowly than at room temperature as their potential energy decreases.

Answer:

The flow of thermal energy in a system, at constant atmospheric pressure AND at thermodynamic standard temperature and pressure.

Answer:

Viruses

Explanation:

Like duh, they can have babies but like they rely on cells, which makes it that they aren't living. Since they are just like they need support and like cells don't like supporting viruses. Kind of like talking to a Chad so like just back off man.

Answer:

In chemistry and atomic physics, the main group is the group of elements whose lightest members are represented by helium, lithium, beryllium, boron, carbon, nitrogen, oxygen, and fluorine as arranged in the periodic table of the elements. The main group includes the elements in groups 1 and 2, and groups 13 to 18.

150  more liters of water does Ian drink than Farida.

Ian drinks = 278 liters

Farida drinks = 128 liters

Ian drink than Farida = 278-128 =150  liters .

We only have a three to five day survival time without fluids because approximately 60% of our body is made up of water .Addition to cleaning out waste and controlling body temperature, transporting nutrients, and being essential for digestion, water serves many other crucial tasks in the body.

small molecule of water. There are three hydrogen atoms and one oxygen atom in it. Hydrogen bonding, a force, is responsible for the adhesion of water molecules. Water is capable of incredible feats because of it.

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Answer: 1 5/8

Explanation:

Answer: H2O2

Explanation:

Answer:

gas

Explanation:

the answer is right in the question (g) stands for gas.

The process of distillation involves heating the alcohol-containing solution, gathering the vapours, and then condensing them back into liquid form.

According to their boiling points, liquids are separated and purified using the distillation process. When it comes to alcohol, the solution is heated until the alcohol evaporates into a vapour, which is then collected and condensed back into a liquid state. A highly concentrated alcohol solution is produced as a result of this procedure, which enables the separation of the alcohol from other elements in the solution.

Alcoholic drinks including whisky, vodka, gin, and rum are made by distillation.

In the chemical industry, distillation is used to separate and purify various compounds and solvents.

In the process of refining petroleum, distillation is used to separate crude oil into several products, including gasoline, diesel, and kerosene.

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The liquidus line separates the following combinations of phase fields: Liquid and Liquid + alpha. The correct option is b.

What is a phase field? A phase field is a technique for representing the microstructure of materials. It is used in materials science, mathematics, and computer science to simulate and study the behavior of materials in the solid and liquid phases. It is a multi-component field that contains information on the concentration of various components, their phase, and the local temperature, as well as other relevant variables.

The liquidus line is defined as the boundary between the liquid phase field and the field that includes both the liquid and the alpha phase. As a result, the liquidus line separates the following combinations of phase fields: Liquid and Liquid + alpha.

So, the correct option is b) Liquid and Liquid + alpha.

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Bohr's model lacked orbitals again for electrons or the electron cloud, contrary to Dalton's theory, which was founded on the idea that every element is made up of its own distinct variety of an indivisible atom.

According to the theory, an atom contains a small, dense, positive charge centre known as the nucleus, where practically every bit of mass was concentrated. Light, particles with negative charges called electrons then orbit far from the nucleus in a manner similar to how planets circle the Sun.

Dalton proposed his atomic hypothesis based on all of his observations. It's frequently called the billiards ball model. Due to the lack of understanding of the atomic electrons and the nucleus at the time, he described an atom as a ball-like structure.

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Answer:

B.)Schrodinger's model

Explanation:

Answer:

1.37 L

Explanation:

(87.0)(0.492)(643)÷(39.1)(515)

27522.972 ÷ 20136.5

=

1.36682005314

↓

1.37 (Rounded)

Hope this Helps!

Answer:

1.37 L

Explanation:

XD

[Mg(HSO4)2] is the formula for magnesium hydrogen sulfate.

Hexamethyldisilazane (HMDS) has been used to mildly produce trimethylsilyl (TMS) ethers from a variety of primary, secondary, and tertiary aliphatic alcohols, aromatic alcohols, and oximes in the presence of magnesium hydrogensulfate [Mg(HSO4)2], a heterogeneous solid acid catalyst.

Additionally, under solvent-free conditions, 14-aryl-14H-dibenzo[a,j]xanthenes and 1,8-dioxo-octahydroxanthene derivatives were produced quickly in the presence of Mg(HSO4)2 in high to exceptional yields.

Some linear and cyclic aromatic acetals have been created using a reusable catalyst made of magnesium hydrogen sulphate in an environment devoid of solvents.

The features of this ecologically friendly method—such as its high product yield, straightforward work-up process, and avoidance of organic solvents—will help it immensely in its role as a green process.

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Answer:an amino acid

Explanation:

For me this was the correct answer on a castle learning

Answer:

Aluminium (Al): (3*2)+(5*2)=16

Sulphor (S): (3*1)=3

Oxygen (O): (4*3)+(3*1)=15

Wavelength (L) is calculated using: L = gT²/2π, here g=9.8 m/s2 and T is wave period in seconds.

Wavelength of a wave describes how long the wave is and the distance from the "crest" (top) of one wave to the crest of next wave is called wavelength. We can also measure from the "trough" (bottom) of one wave to trough of next wave and get the same value for the wavelength.

We measure wavelength in following ways:

Use photometer to measure the energy of wave.

Convert energy into joules (J).

Divide energy by Planck's constant, 6.626 x 10⁻³⁴, to get the frequency of  wave.

Divide speed of light, ~300,000,000 m/s, by frequency to get wavelength.

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Answer:

Tree and Grass?

Explanation:

hope it helps pleass mark me as brainliest answer

Answer:

Pressure and volume relationship, Boyle's law

The relationship between pressure and volume of a gas is given by Boyle's law which states that at constant temperature, the pressure of a given mass of gas is inversely proportional to its volume

Mathematically, we have;

P ∝ 1/V

Please find attached the graph of the relationship between pressure and volume, created with MS Excel

Pressure and temperature relationship, Gay lussac's Law

The pressure of a given mass of gas is directly proportional with the absolute temperature of the gas, provided the volume remains constant

Mathematically, we have;

P ∝ T

Please find attached the graph of the relationship between pressure and temperature, created with MS Excel

Volume and Temperature relationship, Charles Law

The relationship between the volume of a given mass of gas and its pressure is given by Charles law, which states that the volume of a given mass of gas is directly proportional to its absolute temperature, given that the pressure of the gas is kept constant

Mathematically, we have;

V ∝ T

Please find attached the graph of the relationship between volume and temperature, created with MS Excel

Explanation:

Mass conversion from grams to kilograms

In physics and chemistry, it is common to express the mass of an object in grams (g) or kilograms (kg). To convert from grams to kilograms, we divide the mass in grams by 1000. This conversion allows us to express larger masses in a more manageable unit.

For example, in this case, the mass of a 250 ml beaker is 95.4 g. To convert this to kilograms, we divide 95.4 by 1000:

95.4 g / 1000 = 0.0954 kg

Therefore, the mass of the 250 ml beaker is 0.0954 kilograms.

It's important to note that the conversion factor between grams and kilograms is constant and equal to 1000. This means that regardless of the mass, the conversion will always result in the same factor of 1000.

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The product of the hydration reaction of 2-butene is 2-butanol.The H+ from the water attach to one double bonded carbon and the OH group attaches to the second double bonded carbon atom as shown in the image.

Alkenes are unsaturated hydrocarbons with one or more double bonds between carbon atoms. They are highly reactive due to the electron deficient center.

When alkenes are treated with water, according to rule of Markonikoves, H+ will attach at the most substituted double bonded carbon and OH with least substituted one.

Here in 2- butene it is a symmetric alkene hence both double bonded carbon are singly occupied by one hydrogen. Then , the major product is 2- butanol.

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The solution outside the tubing might have reacted with the air, causing oxidation and turning black.

When Alyssa performed Part A of the experiment, she observed that the solution outside the tubing turned black. This could be due to a process known as oxidation.

Oxidation is a chemical reaction that occurs when a substance reacts with oxygen in the air. The reaction causes the substance to lose electrons, which can cause a change in color, among other things.

In this case, the solution outside the tubing may have reacted with oxygen in the air, causing it to turn black. This reaction could have been facilitated by heat, light, or other factors that can increase the rate of oxidation. Additionally, the composition of the solution and the presence of any catalysts could have also contributed to the reaction.

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Answer: With a positively charged nucleus.

Explanation:

Answer:

c. 640.51

Explanation:

Given: 2.54 cm = 1 inch weighed 3.88 ounces

1 g = 0.035273 ounces

?   = 3.88 ounces

? = (3.88 x 1) / 0.035273

? = 109.999 = 110 g

110 g = 3.88 ounces

2.54 cm = 110 g

14.79 cm = ?

? = (14.79 x 110) / 2.54

? = 640.51 g

According to unit conversion, there are 640.51 g would a 14.79 cm length of same iron rod weigh.

Unit conversion is defined as a multi-step process which involves multiplication or a division operation by a numerical factor.The process of unit conversion requires selection of appropriate number of significant figures and the rounding off procedure.

It involves a conversion factor which is an expression for expressing the relationship between the two units.A conversion ratio always has value which equals to one which indicates that numerator and denominator have values which are expressed in different units.

Given: 2.54 cm = 1 inch weighed 3.88 ounces,1 g = 0.035273 ounces

x  = 3.88 ounces

x= (3.88 x 1) / 0.035273

x = 109.999 = 110 g

110 g = 3.88 ounces

Thus,2.54 cm = 110 g

14.79 cm = x

x= (14.79 x 110) / 2.54

x = 640.51 g

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Answer:

About 2 liters

Explanation:

Since 1 gallon equals 3.785 liters, you figure out how many liters per week she uses by 3.785 x 0.75 which is 2.83875. Then divide that by 7 which is 0.405535 liters per day. Then multiply that by 5 days which is 2.027 liters in 5 days.

No idea what this is for, but I hope you have an amazing day:)

Answer:

-

Explanation:

As the piece of metal skitters across the surface of the water in a beaker and — particularly in the case of potassium — it appears to catch fire, it is not obvious that the explanation for both phenomena lies in the production of hydrogen gas.

(a)

Heptane is the limiting factor. as O2 can be found in air.

(b)

balanced equation: C7H16 + 11 O2 --> 7 CO2 + 8 H2O

moles of O2= mass/ mr

moles of O2= 25000/32

moles of O2 = 781.25 moles

According to molar ratio:  

11 : 7

moles of carbon dioxide:

(781.25/11) * 7

497.16 moles

using mass = moles * mr

mass of CO2 = 497.16  * 44 = 21875.04 g -- this is mass of CO2

Answer:

D

Explanation:

The electromagnetic spectrum consists of various types of electromagnetic radiation, such as radio waves, microwaves, infrared radiation, visible light, ultraviolet radiation, X-rays, and gamma rays. Each type of radiation has different wavelengths and frequencies.

When it comes to the absorption of electromagnetic radiation by different substances, it depends on the properties of the substance and the type of radiation.

In the case of berry juice, it is likely to absorb visible light and some UV radiation due to the presence of pigments such as anthocyanins. Carbon, on the other hand, is a good absorber of infrared radiation due to its unique molecular structure. Lastly, Tio2 (titanium dioxide) is known for its ability to absorb UV radiation, which makes it a common ingredient in sunscreens and other UV-blocking products. In summary, each layer is expected to absorb different parts of the electromagnetic spectrum based on their unique properties and the type of radiation they interact with.
The electromagnetic spectrum is a range of all types of electromagnetic radiation, including visible light, ultraviolet (UV) light, and infrared (IR) light. Each layer absorbs different parts of the spectrum:

a. Berry juice: Berry juice primarily absorbs visible light, especially in the blue and green parts of the spectrum. This is due to the presence of pigments such as anthocyanins that give the juice its characteristic color.

b. Carbon: Carbon absorbs in the UV and IR parts of the electromagnetic spectrum. In the UV region, it can absorb radiation due to the presence of pi-electrons, while in the IR region, it absorbs radiation due to molecular vibrations.

c. TiO2 (titanium dioxide): TiO2 absorbs UV light, especially in the UV-A and UV-B regions of the spectrum. This is why it is commonly used as an active ingredient in sunscreens to protect the skin from UV radiation.

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